8. Describe the air mass characteristics (temperature and humidity) for each of the following belts:
A) the equatorial low (0)and
B) 30°N and 30° subtropical highsand
C) 60°N and 60°5 subpolar lowsand
D) 90°N and 90°S (poles) highsand

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.